// Copyright 2016 Netflix, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package decryptor

import (
	"github.com/Netflix/chaosmonkey"
	"github.com/Netflix/chaosmonkey/config"
	"github.com/Netflix/chaosmonkey/deps"
	"github.com/pkg/errors"
)

type nullDecryptor struct{}

// Decrypt implements chaosmonkey.Decryptor.Decrypt
// This is a no-op implementation that simply returns the plaintext
func (n nullDecryptor) Decrypt(ciphertext string) (string, error) {
	return ciphertext, nil
}

func init() {
	deps.GetDecryptor = getNullDecryptor
}

func getNullDecryptor(cfg *config.Monkey) (chaosmonkey.Decryptor, error) {
	kind := cfg.Decryptor()
	if kind != "" {
		return nil, errors.Errorf("unsupported decryptor: %s", kind)
	}

	return nullDecryptor{}, nil
}
